[SFfiredog]

How high do you want to rev your motor?
Do you have a forged or cast crank?
Which rods?
Block mods?
Are you willing to pull the heads?
To rev over 7000 effectively I would recomend a mechanical flat tappet or mechanical roller cam.
If you don't want to rev past 6500 the cam you have is fine and you could get a little more lift by changing rockers to 1.7s. You could end up spending more money than you excpected, though.
Think about the real world expectations you want, then we can pick out a cam.
--Mike